EP0608192A1 - Verfahren und Apparat zum Reinigen eines Metallisierungsbades zum Beschichten von Metallgegenständen mit einer metallischen Legierung - Google Patents

Verfahren und Apparat zum Reinigen eines Metallisierungsbades zum Beschichten von Metallgegenständen mit einer metallischen Legierung Download PDF

Info

Publication number: EP0608192A1
Authority: EP; European Patent Office
Prior art keywords: bath; alloy; installation according; compartments; transducer
Prior art date: 1993-01-22
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP94470001A

Other languages

English (en)

French (fr)

Other versions

EP0608192B1 (de

Inventor

Patrick Abed

Marc Dauzat

Jean-Marc Rouxel

Michel Nogues

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Sollac SA

Original Assignee

Sollac SA

Lorraine de Laminage Continu SA SOLLAC

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1993-01-22

Filing date

1994-01-18

Publication date

1994-07-27

1994-01-18 Application filed by Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA

1994-07-27 Publication of EP0608192A1 publication Critical patent/EP0608192A1/de

1998-07-01 Application granted granted Critical

1998-07-01 Publication of EP0608192B1 publication Critical patent/EP0608192B1/de

2014-01-18 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Classifications

- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/32—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor using vibratory energy applied to the bath or substrate
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/04—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material with special provision for agitating the work or the liquid or other fluent material
- B05C3/05—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material with special provision for agitating the work or the liquid or other fluent material by applying vibrations thereto

Definitions

the invention relates to the field of coating metallurgical products with a metal alloy, in particular the galvanization of steel products, by dipping these products in a bath containing this alloy in the liquid state.
the galvanization of metallurgical products is carried out by letting these fixed products stay or by scrolling in a molten metal bath based on zinc and which can also contain variable quantities (up to a few%) aluminum.
these baths quickly become supersaturated with iron, and intermetallic compounds Fe-Zn or Fe-Al-Zn precipitate.
These precipitates are called “mattes” and settle either towards the surface of the bath (from which they are periodically removed manually) or towards the bottom of the galvanizing tank, depending on their relative density compared to that of the zinc alloy bath. .
This density is governed by their composition; the Fe-Al-Zn mattes settle towards the surface, the Fe-Zn mates towards the bottom.
the bath therefore permanently contains a relatively large quantity of mattes. The consequence is that the mattes are deposited at the same time as the zinc alloy on the product to be coated, and often cause the appearance of serious defects in surface appearance in the coating.
the object of the invention is to propose a process making it possible to accelerate the elimination of solid impurities within the liquid alloy baths, so as to regularly obtain a satisfactory quality for the dip coatings of metallurgical products.
the subject of the invention is a process for coating a metallurgical product, in particular steel, according to which the said product is soaked in a bath of metal alloy containing solid impurities, characterized in that, in order to accelerate the settling of said impurities, an insonation of said alloy bath is carried out.
Another subject of the invention is an installation for coating metallurgical products, in particular steel, of the type comprising a tank containing a bath of metallic alloy and means for dipping said products in said alloy bath, characterized in that it also includes means for insonating said alloy bath.
said tank comprises at least one partition dividing it into at least two compartments each containing either said means for dipping said metallurgical products in said alloy bath, or said means for insonating said alloy bath, and l 'installation also includes means for communicating said compartments.
the invention consists in injecting into the tank containing the liquid metallic alloy sound or ultrasonic waves which have the effect of accentuating the settling of impurities. It is particularly advisable to carry out this insonation in a zone of the tank separated by a partition from the zone where the coating takes place and to carry out a continuous exchange of liquid alloy between the two compartments thus defined.
the inventors have found that the exposure of zinc alloy baths of the type used for galvanizing very significantly accelerates the settling of the mattes. It has been observed, in particular, thanks to the quenching of small crucibles a few cm high containing such alloys and which had or did not undergo an insonation during a determined period. This insonation was carried out for 30 minutes by means of a vibrating blade connected to an ultrasonic transmitter of frequency 25 kHz and immersed in a Zn-Fe-AI liquid alloy at 450 ° C. Once soaked, these crucibles and the alloy they contained were cut in the height direction, and the thickness of the mattes which had accumulated in the upper part of the crucible during the experiment was measured. .
FIG. 1 schematically represents an installation for galvanizing a moving steel strip, modified according to the invention.
a tank 1 with a length and a width of the order of a few meters, containing a bath 2 of zinc alloy, about 2 m deep and maintained in the liquid state at a temperature of l '' order of 400-500 ° C.
the moving steel strip 3 enters the alloy bath 2 while being protected from the ambient air by a bell 4 whose upstream end is connected to the heat treatment installation which precedes the galvanization installation, and whose downstream end plunges into the alloy bath 2.
the strip 3 comes to be wound against a drum 5 rotating around its axis 6, and immersed in the bath 2.
the tank 1 is divided into two compartments 7 and 8 by a partition 9.
the compartment 7 contains the members which have just been described and constitutes the galvanizing compartment proper, while the compartment 8 is the one where the settling of the mattes is preferably carried out by the process which is the subject of the invention.
a permanent circulation of the liquid zinc alloy 2 is established between these two compartments 7 and 8 by means of one or more openings 10 made in the partition 9, and by means of a pipe 11 provided with a pump. 12 which returns to the settling compartment 8 the alloy taken from the galvanizing compartment 7 (the reverse course is also acceptable).
accelerated decantation of the mattes is carried out in the decantation compartment 8 by means of a pavilion 13 of circular shape and of diameter on the order of 0.40 to 1 m, connected to a transducer 14, such as an electrodynamic, piezoelectric or magnetostrictive exciter.
the frequency N is chosen so as to bring the horn 13 into resonance, and the distance "h" separating the horn 13 from the bottom of the tank 1 is chosen equal to an integer number of half-wavelengths ⁇ of the vibrations of the pavilion 13, in order to increase the vibratory efficiency of the installation.
the electrical power of the transducer 14 can be of the order of 0.3 to 10 kW.
the mattes of lower density than the bath 2 rise to the surface in the compartment 8 and form there a surface layer 15 enriched with mattes while the mattes of higher density than the bath 2 form a layer 16 in the bottom of the tank 1 .
the transducer 14 It is also possible to replace the transducer 14 with an ultrasonic transmitter. Under these conditions, it is possible to create cavitation phenomena in the alloy bath 2, provided that its dimensions are reduced (of the order of a few tens of cm), or to multiply the number of transmitters so that the entire bath 2 is affected by cavitation and not only the areas closest to the pavilion 13.
the ultrasonic emitters can be kept out of the alloy bath 2 and applied to the outside of the walls of the tray 1, which avoids providing means to protect them from attack by the alloy bath 2. In return, there is the risk that, in the general case, the vibratory efficiency of the transmitters is insufficient to obtain cavitation in the bath 2. It can therefore only be envisaged for installations of very small dimensions, which would for example be suitable for coating small insulated parts.
FIG. 3 represents a possible variation of the installation according to the invention shown in FIG. 1.
the elements common to the two installations are designated by the same references.
the pipe 11 and the pump 12 bring the alloy bath from the settling compartment 8 to the galvanizing compartment 7.
the return of the alloy to the settling compartment is effected by an overflow threshold 18 formed above of the partition 9, the height of which is slightly less than the nominal depth of the bath 2.
the invention can be applied not only to installations for galvanizing the passing of steel strips, but to all installations for the dip coating of metallurgical products, whether moving or stationary, with a metal alloy initially liquid state and likely to contain solid impurities which one wishes to eliminate.

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Coating With Molten Metal (AREA)
Physical Vapour Deposition (AREA)
Application Of Or Painting With Fluid Materials (AREA)

EP94470001A 1993-01-22 1994-01-18 Verfahren und Apparat zum Reinigen eines Metallisierungsbades zum Beschichten von Metallgegenständen mit einer metallischen Legierung Expired - Lifetime EP0608192B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR9300761A FR2700779B1 (fr)	1993-01-22	1993-01-22	Procédé pour l'épuration d'un bain de revêtement de produits métallurgiques par un alliage métallique, et installation pour la mise en Óoeuvrer de ce procédé.
FR9300761		1993-01-22

Publications (2)

Publication Number	Publication Date
EP0608192A1 true EP0608192A1 (de)	1994-07-27
EP0608192B1 EP0608192B1 (de)	1998-07-01

Family

ID=9443374

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP94470001A Expired - Lifetime EP0608192B1 (de)	1993-01-22	1994-01-18	Verfahren und Apparat zum Reinigen eines Metallisierungsbades zum Beschichten von Metallgegenständen mit einer metallischen Legierung

Country Status (8)

Country	Link
US (1)	US5558715A (de)
EP (1)	EP0608192B1 (de)
JP (1)	JPH07305156A (de)
KR (1)	KR100295783B1 (de)
AT (1)	ATE167900T1 (de)
DE (1)	DE69411289T2 (de)
ES (1)	ES2118350T3 (de)
FR (1)	FR2700779B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2009059770A1 (de) *	2007-11-07	2009-05-14	Stangl Semiconductor Equipment Ag	Vorrichtung und verfahren zur beschichtung einer oberfläche

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JP3098966B2 (ja) *	1995-12-12	2000-10-16	日本ペイント株式会社	金属成型物のリン酸塩皮膜化成処理方法
US5961285A (en) *	1996-06-19	1999-10-05	Ak Steel Corporation	Method and apparatus for removing bottom dross from molten zinc during galvannealing or galvanizing
US6582520B1 (en)	1997-12-09	2003-06-24	Ak Steel Corporation	Dross collecting zinc pot
WO1999051789A1 (en) *	1998-04-01	1999-10-14	Nkk Corporation	Hot dip zincing method and device therefor
KR20030054488A (ko) *	2001-12-26	2003-07-02	주식회사 포스코	용융아연 도금욕조의 구조물 드로스부착 억제방법
US20060208559A1 (en) *	2005-03-17	2006-09-21	Morris Bruce E	Wheel ornament assembly as constantly vertical for rotationally independant wheel spinner
DE102007050131A1 (de)	2007-10-19	2009-04-23	Sms Demag Ag	Verfahren und Vorrichtung zum Schmelztauchbeschichten eines Metallbandes
AU2008350133B2 (en) *	2008-02-08	2012-11-22	Clecim SAS	Method for the hardened galvanisation of a steel strip
WO2012029511A1 (ja) *	2010-09-02	2012-03-08	新日本製鐵株式会社	溶融亜鉛めっき鋼板製造装置及び溶融亜鉛めっき鋼板製造方法
DE102011001236B4 (de) *	2011-03-11	2015-07-02	Seho Systemtechnik Gmbh	Verfahren und Vorrichtung zum Verzinnen von Werkstücken
KR20230004000A (ko) *	2021-06-30	2023-01-06	주식회사 엘지에너지솔루션	코팅층 두께 조절이 용이한 코팅장치 및 코팅방법

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FR964691A (de) *	1947-05-13	1950-08-22
DE2715048A1 (de) *	1977-04-04	1978-10-12	Siemens Ag	Vorrichtung zum flussmittelfreien verzinnen mittels ultraschall
JPS6393850A (ja) *	1986-10-08	1988-04-25	Nippon Steel Corp	溶融亜鉛メツキ浴中の介在物除去方法
WO1988005831A1 (fr) *	1987-02-03	1988-08-11	Otto Junker Gmbh	Procede d'utilisation des fours de liquefaction de fonte
JPH0255648A (ja) *	1988-08-22	1990-02-26	Kawasaki Steel Corp	溶鋼中の非金属介在物の除去方法

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US3277566A (en) *	1963-03-19	1966-10-11	Western Electric Co	Methods of and apparatus for metalcoating articles
US3430332A (en) *	1966-04-01	1969-03-04	Electrovert Mfg Co Ltd	Production line soldering with application of ultrasonic energy directing to molten solder
US3689049A (en) *	1969-04-04	1972-09-05	Ajax Newark Inc The	Method and apparatus for separating metal from dross
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1993
- 1993-01-22 FR FR9300761A patent/FR2700779B1/fr not_active Expired - Fee Related
1994
- 1994-01-14 US US08/181,553 patent/US5558715A/en not_active Expired - Fee Related
- 1994-01-18 ES ES94470001T patent/ES2118350T3/es not_active Expired - Lifetime
- 1994-01-18 EP EP94470001A patent/EP0608192B1/de not_active Expired - Lifetime
- 1994-01-18 DE DE69411289T patent/DE69411289T2/de not_active Expired - Fee Related
- 1994-01-18 AT AT94470001T patent/ATE167900T1/de not_active IP Right Cessation
- 1994-01-21 KR KR1019940001119A patent/KR100295783B1/ko not_active Expired - Fee Related
- 1994-01-24 JP JP6023361A patent/JPH07305156A/ja active Pending

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Publication number	Priority date	Publication date	Assignee	Title
FR964691A (de) *	1947-05-13	1950-08-22
DE2715048A1 (de) *	1977-04-04	1978-10-12	Siemens Ag	Vorrichtung zum flussmittelfreien verzinnen mittels ultraschall
JPS6393850A (ja) *	1986-10-08	1988-04-25	Nippon Steel Corp	溶融亜鉛メツキ浴中の介在物除去方法
WO1988005831A1 (fr) *	1987-02-03	1988-08-11	Otto Junker Gmbh	Procede d'utilisation des fours de liquefaction de fonte
JPH0255648A (ja) *	1988-08-22	1990-02-26	Kawasaki Steel Corp	溶鋼中の非金属介在物の除去方法

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PATENT ABSTRACTS OF JAPAN vol. 12, no. 333 (C - 526)<3180> 8 September 1988 (1988-09-08) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2009059770A1 (de) *	2007-11-07	2009-05-14	Stangl Semiconductor Equipment Ag	Vorrichtung und verfahren zur beschichtung einer oberfläche
EP2223750A2 (de)	2007-11-07	2010-09-01	Stangl Semiconductor Equipment AG	Vorrichtung und Verfahren zur Beschichtung einer Oberfläche

Also Published As

Publication number	Publication date
FR2700779A1 (fr)	1994-07-29
EP0608192B1 (de)	1998-07-01
JPH07305156A (ja)	1995-11-21
KR100295783B1 (ko)	2001-10-24
ES2118350T3 (es)	1998-09-16
FR2700779B1 (fr)	1995-03-10
ATE167900T1 (de)	1998-07-15
US5558715A (en)	1996-09-24
DE69411289T2 (de)	1999-03-04
KR940018474A (ko)	1994-08-18
DE69411289D1 (de)	1998-08-06

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Publication	Publication Date	Title
EP0608192B1 (de)	1998-07-01	Verfahren und Apparat zum Reinigen eines Metallisierungsbades zum Beschichten von Metallgegenständen mit einer metallischen Legierung
CA2681329A1 (fr)	2008-11-27	Procede de revetement d'un substrat et installation de depot sous vide d'alliage metallique
EP0349420B1 (de)	1992-07-29	Verfahren und Vorrichtung zum gleichzeitigen Schutz der inneren und äusseren Oberflächen, insbesondere bei der Aluminisierung von Teilen aus hitzebeständigen Legierungen auf der Basis von Ni, Co oder Fe
CA2714475A1 (en)	2009-08-13	Hot-dip galvanizing installation for steel strip
CA2062720C (fr)	1999-08-10	Procede, enceinte et installation pour le revetement continu/intermittent d'objets par passage desdits objets a travers une masse liquide d'un produit de revetement
EP3077562B1 (de)	2019-03-06	Kontinuierliche verarbeitungslinie zur bearbeitung eines nichtmagnetischen metallbandes mit einem galvanisierungsabschnitt sowie verfahren zur induktionserwärmung dieses bandes in diesem galvanisierungsabschnitt
EP4081669A1 (de)	2022-11-02	Vorrichtung zum entfernen von matten oberflächen eines flüssigen metallbades innerhalb eines kanals einer leitung zum kontinuierlichen beschichten eines metallbandes
FR2926233A1 (fr)	2009-07-17	Dispositif d'alimentation en gaz d'une machine de brasage ou etamage a la vague.
EP0720663B1 (de)	1997-06-11	Dimensionierung eines beschichtungsbehaelters mit einer magnetischen wischvorrichtung von mit flussigem metall beschichteten metallurgischen materialen
FR2665842A1 (fr)	1992-02-21	Agregat transportable avec chassis ou tambour d'immersion, avec un generateur d'oscillations eventuellement integre.
FR2654749A1 (fr)	1991-05-24	Procede et dispositif d'epuration d'un bain de metal liquide au temps chaud d'une bande d'acier.
FR2504036A1 (fr)	1982-10-22	Procede et dispositif pour empecher l'oxydation de brames de cuivre a la sortie d'une machine de coulee continue
CA3024166A1 (fr)	2017-12-07	Procede de fabrication de lingots de laminage par coulee verticale d'un alliage d'aluminium
EP0378036B1 (de)	1993-03-31	Verfahren und Vorrichtung zum Stranggiessen von dünnem Metalldraht
FR2984868A1 (fr)	2013-06-28	Procede et dispositif de purification du silicium
FR2817494A1 (fr)	2002-06-07	Dispositif pour le nettoyage de pieces de fonderie
CH621365A5 (en)	1981-01-30	Process for refining magnesium, copper, zinc, tin and lead
WO1996035822A1 (fr)	1996-11-14	Dispositif et installation pour revetir une bande d'acier
EP0279803B1 (de)	1991-09-18	Anlage zur kontinuierlichen Herstellung einer sehr dünnen Metallfolie durch elektrolytische Abscheidung
FR2679803A1 (fr)	1993-02-05	Procede permettant d'ameliorer l'etat de surface et la regularite d'epaisseur d'une bande mince metallique coulee sur une roue.
WO1996016193A1 (fr)	1996-05-30	Dispositif de degazage et de separation des inclusions dans un bain de metal liquide
FR2477577A1 (fr)	1981-09-11	Procede de galvanisation et installation pour la mise en oeuvre du procede
EP0527717B1 (de)	1997-02-19	Verfahren und Vorrichtung zum Stranggiessen einer Metallschmelze
LU81008A1 (fr)	1980-09-24	Procede et installation pour le reglage de l'epaisseur des couches de metal deposees au cours d'operaions de galvanisation a chaud
BE567860A (de)